1671689963 has 2 divisors, whose sum is σ = 1671689964. Its totient is φ = 1671689962.

The previous prime is 1671689953. The next prime is 1671689983. The reversal of 1671689963 is 3699861761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1671689963 - 2⁴ = 1671689947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1671689899 and 1671689908.

It is not a weakly prime, because it can be changed into another prime (1671689953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835844981 + 835844982.

It is an arithmetic number, because the mean of its divisors is an integer number (835844982).

Almost surely, 2^1671689963 is an apocalyptic number.

1671689963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671689963 is an equidigital number, since it uses as much as digits as its factorization.

1671689963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The square root of 1671689963 is about 40886.3053234209. The cubic root of 1671689963 is about 1186.8210620643.

The spelling of 1671689963 in words is "one billion, six hundred seventy-one million, six hundred eighty-nine thousand, nine hundred sixty-three".